摘要翻译:
测定了SrTiO3-d的复弹性柔度s11(w,T)与缺氧量d<0.01的关系。吸收过程中的两个主要弛豫峰是孤立的O空位跃过0.60eV的势垒和涉及1eV势垒的空位对的重新取向。对结合能约为0.2eV,在d~0.004处已发现有可能成链的额外聚类迹象。O空位的弹性偶极子的无istrican分量为Deltalambda=0.026。
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英文标题:
《Hopping and clustering of oxygen vacancies in SrTiO3 by anelastic
relaxation》
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作者:
F. Cordero
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最新提交年份:
2007
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分类信息:
一级分类:Physics 物理学
二级分类:Materials Science 材料科学
分类描述:Techniques, synthesis, characterization, structure. Structural phase transitions, mechanical properties, phonons. Defects, adsorbates, interfaces
技术,合成,表征,结构。结构相变,力学性质,声子。缺陷,吸附质,界面
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一级分类:Physics 物理学
二级分类:Statistical Mechanics 统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
The complex elastic compliance s11(w,T) of SrTiO3-d has been measured as a function of the O deficiency d < 0.01. The two main relaxation peaks in the absorption are identified with hopping of isolated O vacancies over a barrier of 0.60 eV and reorientation of pairs of vacancies involving a barrier of 1 eV. The pair binding energy is ~0.2 eV and indications for additional clustering, possibly into chains, is found already at d ~0.004. The anistropic component of the elastic dipole of an O vacancy is Deltalambda = 0.026.
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PDF链接:
https://arxiv.org/pdf/707.0639


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